ARM: realview: ensure visibility of writes during reset
The various reset routines in mach-realview rely on an FPGA to power-cycle the board after writing some magic runes to memory-mapped registers. This patch adds a dsb() following the writes, so that they become visible before we mdelay(1000) in the arch_reset code. Without this patch, the timeout would expire sporadically, causing the reset to fail. Signed-off-by: Will Deacon <will.deacon@arm.com>
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@ -44,6 +44,7 @@ static inline void arch_reset(char mode, const char *cmd)
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*/
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*/
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if (realview_reset)
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if (realview_reset)
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realview_reset(mode);
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realview_reset(mode);
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dsb();
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}
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}
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#endif
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#endif
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